Arcana Coelestia # 6833
6833. 'And he saw, and behold, the bramble bush was burning with fire' means a recognition that true factual knowledge was full of the good of God's love. This is clear from the meaning of 'seeing' as recognizing, dealt with in 2150, 3764, 4567, 4723, 5400; from the meaning of 'a bramble bush' as true factual knowledge, dealt with immediately above in 6832; and from the meaning of 'fire' as God's love, dealt with in 934 (end), 4906, 5071, 5215, 6314, 6832, so that 'burning with fire' means to be full of the good of God's love.
Chaldea
Chaldea was a land lying along the Euphrates river near its mouth, south of Babylon, part of what is now southern Iraq. It was a land of the Lord's second great church, the Ancient Church, which at its height had a wealth of knoweldge through its own sacred scriptures and the correspondences of nature. But as this church declined Chaldea came to represent people who use truths for evil purposes and thus profane and falsify them. Abram was born in Chaldea because of the greatness it had represented, but had to leave because of what it had become.